CN105235659A - Top-entry-type large-span platform automatic support mechanism - Google Patents
Top-entry-type large-span platform automatic support mechanism Download PDFInfo
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- CN105235659A CN105235659A CN201510726404.3A CN201510726404A CN105235659A CN 105235659 A CN105235659 A CN 105235659A CN 201510726404 A CN201510726404 A CN 201510726404A CN 105235659 A CN105235659 A CN 105235659A
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Abstract
The invention belongs to the technical field of transport operation platforms and specifically relates to a top-entry-type large-span platform automatic support mechanism comprising a transport operation platform and support assemblies arranged on two sides of the transport operation platform in pairs oppositely. Each support assembly is a planar hinge joint connecting rod structure comprising a hydraulic cylinder, an upper support arm and a lower support arm which are hinged successively, wherein one corner end of the upper support arm and the cylinder wall of the hydraulic cylinder are hinged to the upper platform top of the transport operation platform, a piston rod end of the hydraulic cylinder is hinged to one side wall of the upper support arm, the lower support arm is in an overhung arm body structure, and hinge joint shafts at the hinge joint portions are parallel to each other. The automatic support mechanism also comprises follow-up locking assemblies. The top-entry-type large-span platform automatic support mechanism can effectively maintain the original maneuverability indexes such as the ground clearance and departure angle of the transport operation platform, effectively guarantee the transport maneuverability and safety of machine bodies, and also improve the transverse support stability.
Description
Technical field
The invention belongs to transport platform technology field, be specifically related to a kind of upper dress formula large span platform automatic supporting mechanism that can be applicable to the transport platforms such as mobile radara, missile truck, crane-car, ascend operation car.
Background technology
The transport platforms such as existing mobile radara, missile truck, crane-car, ascend operation car are all provided with supporting mechanism, to replace the fugitiveness of Tire support system, realize the firm support object of transport platform when stationary deployment.Traditional supporting mechanism, the patent name being " CN102198816A " at notification number is the Chinese invention patent text of " a kind of military transport working platform vehicle ", and described by the Chinese patent name that notification number is " CN2384864 " is called in the utility model patent text of " aerial loading-unloading transport platform truck " and all has: also namely as shown in Figure 1, as on the transport platform base of matrix, arrange that vertical is to telescopic at least four supporting leg a respectively at the corner end of transport platform, final formation Telescopic shaft type four-point supporting mechanism.Namely although along with the progress of society's science and technology, above-mentioned supporting mechanism creates more modification gradually, its end structural framing of dress formula does not change, and also the installation site of supporting leg is the below being positioned at transport platform all the time.The supporting leg mounting structure of this end dress formula, not only seriously occupy original space below transport platform truck, make the original departure angle of transport platform truck, ground Clearance all corresponding reduction, cause when transport platform truck is by abrupt slope, arch bridge, convex-concave road surface, end dress formula supporting mechanism very easily clashes into ground, affects transportation mobility and the safety of transport platform truck.Meanwhile, due to end dress formula supporting mechanism supporting way straight up and down, its cross-tie span is generally no more than transport platform overall width, namely≤2.5 meters.Once the equipment on transport platform is higher, then often have influence on its cross-tie steadiness, thus cause adverse effect to the reliable and stable operation of transport platform.
Summary of the invention
Object of the present invention is for overcoming above-mentioned the deficiencies in the prior art, a kind of rational in infrastructure and dress formula large span platform automatic supporting mechanism on failure-free is provided, be different from traditional end dress formula support structure, the present invention effectively can keep the manoevreability indexs such as transport platform original ground Clearance, departure angle, and the transportation mobility of body and safety can effectively be ensured.Meanwhile, the cross-tie span of transport platform is larger, and cross-tie stability also can be further enhanced.The present invention, also can the safety in utilization of lifting means and reliability further also by the employing of servo-actuated locking mechanism.
For achieving the above object, present invention employs following technical scheme:
In one, dress formula large span platform automatic supporting mechanism, comprises transport platform, and for asking this transport platform of support to make it away from the supporting component on ground, each supporting component transport platform both sides place that is placed in facing each other; It is characterized in that: described supporting component is by hydraulic actuating cylinder, upper branch arm and the lower branch arm hinged planar hinge connective pole structure formed one by one; One jiao of end of upper branch arm and the casing wall of hydraulic actuating cylinder are all articulated with the upper table surface place of transport platform, the rod end of hydraulic actuating cylinder is articulated with a side-walls of upper branch arm, hingedly each other between upper branch arm top and lower branch arm top construct with the catenary arm body forming lower branch arm, the jointed shaft of above-mentioned each hinge point is all parallel to each other; This automatic supporting mechanism is also included in supporting component when being in holding state, for the servo-actuated latch assembly of lock support component operation position.
Described servo-actuated latch assembly comprises follow-up connecting rod and the servo-actuated locking hook that can turn over down the following table place being fastened on transport platform hinged with it; Described servo-actuated locking hook profile is in " L " word coupler body shape and the other end of its relative coupler body place end is articulated with on upper branch arm, is arranged in parallel between the jointed shaft axis of this hinge point axis and follow-up connecting rod and servo-actuated locking hook; The side-walls for fixed piston rod of upper branch arm arranges frid, frid runs through plate body and arranges waist shaped hole, and the hole length direction of waist shaped hole intersects or parallel pistons bar telescopic direction; The other end of the relatively hinged servo-actuated locking hook of follow-up connecting rod is articulated with the rod end place of piston rod, and jointly with form chute between the waist shaped hole on frid and lead and coordinate.
Described upper branch arm profile is the deckle board structure of parallel four limit shapes, the side hypotenuse of upper branch arm forms the fixation wall of fixing frid, and relative opposite side hypotenuse leans the top end face of lower branch arm to form the limited wall of firm spacing cooperation when supporting component is in holding state; The lower side angle end of limited wall forms the pin jointed end of hinged upper branch arm; The lower side angle end of fixation wall forms the pin jointed end of hinged transport platform; Leave in upper branch arm for installing servo-actuated latch assembly and providing the container cavity of its activity space.
The pass of waist shaped hole along fixation wall wall after downward-extension, more gradually the outside wall away from fixation wall to form the poroid structure of camber line.
The bottom face of described upper branch arm is extended with the ennation of triangular shape to the upper table surface place of transport platform; The bottom face place of upper branch arm is fixed in one side laminating of ennation, and the relative one jiao of end in this side arranges hinged journal stirrup to form the pin jointed end for hinged transport platform of upper branch arm; The bottom face of this ennation form the maximum process amplitude of spacing hydraulic actuating cylinder confined planes.
The top end face of described lower branch arm in form wedge surface between the limited wall of upper branch arm and construct against the inclined plane shape coordinated; The top end face of lower branch arm arranges the recessed flank of tooth, the convex side that the corresponding layout in limited wall place of upper branch arm coordinates with it, both form seam and coordinate between fitting surface.
Lower branch arm is provided with the boss playing spacing hydraulic actuating cylinder backhaul amplitude when supporting component is packed up, this boss be positioned on lower branch arm with the lower sidewalls place of upper branch arm hinged place, the bearing of trend of boss points to the bottom face place of upper branch arm.
In described lower branch arm, leading screw and nut mechanism is set, the screw mandrel section axis plumbing arrangement of described leading screw and nut mechanism, and its rotation is ordered about with reducing motor in its top; The push rod of the outer sheathed sleeve-shaped of screw mandrel section, push rod arranges driving nut with the cooperation place of screw mandrel section, and driving nut is fixed on push rod top end and formation screw thread fit intersegmental with screw mandrel; The bottom face place of push rod arranges ball hinged supporting base plate.
Transport platform profile is rectangular planar structure; Supporting component is four groups, and the two ends place being arranged in the length direction of transport platform split between two.
Beneficial effect of the present invention is:
1), the present invention casted off traditional end dress formula supporting mechanism once and for all, thus eliminates the original departure angle of such as transport platform truck that end assembling structure brings, ground Clearance all corresponding reduction, and even many defects such as cross-tie poor stability.By dress formula structure in the employing that looks for another way, rely on transport platform upper table surface place to settle with the planar hinge connective pole mechanism of Driven by Hydraulic Cylinder, to form supporting component, thus utilize the driving effect of hydraulic actuating cylinder and being fitted to each other of each hinge-point, turn over support and lifting recovery operation under finally realizing supporting component.In other words, there are two kinds of location statuss in supporting component, and when supporting component is in collapsed state, piston rod bounces back and drives upper branch arm and lower branch arm to bounce back to more than the upper table surface of transport platform.When supporting component is in holding state, piston rod extends and drives upper branch arm and lower branch arm to extend to below the upper table surface of transport platform, and now lower branch arm is to be resisted against ground place under self pendency effect, realizes the support object for transport platform.
To sum up, the present invention is rational in infrastructure and practical, on the one hand, changes upper dress formula large span platform automatic supporting mechanism into by being filled formula platform support mechanism the end, maintain the manoevreability indexs such as transport trolley original ground Clearance, departure angle, achieve the high motorized transport object of the equipments such as mobile radara.On the other hand, the supporting component movement structure of lower turning type, increases the cross-tie span of transport platform, ensure that transport platform cross-tie stability.Utilize the locking of servo-actuated catch gear to coordinate, even can consider during actual use to adopt the mechanical localization mechanisms such as manual positioning bearing pin, thus reach the object of locking or unlocking transport platform, its job security can be promoted further.
2), the employing of servo-actuated locking mechanism, maybe can adopt the manual positioning pin shaft structure that the artificial later stage coordinates, with when supporting component arrives Support Position, manually add the stable operation that latch etc. ensures between each parts.Also electrical coordination can be adopted to construct, by external impetus structures such as the hydraulic actuating cylinders that additionally arranges, realize its insurance location and locking object.Servo-actuated catch gear of the present invention, also be one of maximum bright spot of the present invention, also namely: servo-actuated catch gear adopts servo-actuated locking bail and follow-up connecting rod, collocation possesses the frid structure of waist shaped hole, thus when piston rod produces backhaul and process action, can follow-up connecting rod be driven automatically to produce to promote or retracting action, so make servo-actuated locking bail produce corresponding under turn over fasten transport platform following table or on turn over the action departing from transport platform following table.The design collocation of frid place waist shaped hole is most important, which ensure each piston rod drive whole supporting component produce corresponding regain and support part time, servo-actuated catch gear is all inevitable before upper branch arm and lower branch arm produce action or after reaching latched position, automatically can complete dropout and the locking operation of " automatically " of servo-actuated locking hook.It is without the need to extra power source, utilizes the action of piston rod can complete the servo-actuated action of whole servo-actuated catch gear, and structure is very succinct and functional reliability is high, and reach effective, cost of manufacture is low, and cost performance is high.
3), the hypotenuse of upper branch arm forms, and forms fixation wall on the one hand to arrange frid, then forms limited wall on the other hand with when whole supporting component does support part, plays spacingly to be matched with lower branch arm place, thus realizes the structural soundness of whole supporting component.The pass of waist shaped hole is arranged and is also worthy of careful study, and when it should ensure that piston rod produces action, needs first to produce guiding sliding action along waist shaped hole, and then drives follow-up connecting rod and servo-actuated locking hook to produce action.In brief, waist shaped hole can not vertical piston bar action reversed be arranged, and when piston rod produces backhaul action or process action to promote upper branch arm, each sequence of operation of supporting component should be: piston rod process action-piston rod produces turning under slip/follow-up connecting rod synchronization action-follow-up connecting rod promotes servo-actuated locking hook forward-piston rod rod end arrival waist shaped hole end/upper branch arm action-supporting component along the waist shaped hole of cell body and reaches Support Position/servo-actuated locking hook and be synchronously fastened on transport platform following table and sentenced locking.When piston rod backhaul action-piston rod turns back the above position of the table top being reduced to transport platform along the waist shaped hole retraction slips/follow-up connecting rod synchronization action-servo-actuated locking hook of cell body turning over the following table departing from transport platform to complete on the unblock-piston rod rod end arrival waist shaped hole other end/upper branch arm action-supporting component.
4), the layout of ennation, on the one hand as the extension of upper branch arm, play and be connected the arm body of upper branch arm and the function of transport platform upper table surface.On the other hand, its bottom face is when supporting component is in Support Position, should parallel transport platform upper table surface and there is with it gap slightly, to ensure to be unlikely to because hydraulic actuating cylinder process is too much, and the supporting component stretch amplitude caused is excessive, and then causing supporting component job insecurity situation, its safety of structure can be promoted further.Same, boss described later in like manner, is arranged after boss, even if because piston cylinder backhaul is too fast or amplitude is excessive, also turn over situation whole upper branch arm and lower branch arm generation can be avoided to topple because of the position-limiting action of boss after, this is to ensureing that the reliable and secure use of each articulation piece all can play Beneficial Effect.
5), lower branch arm when initial position, its entirety relies on gravity and present the cantilever-shaped layout of axis vertical.When upper branch arm turns up action gradually, lower branch arm is in axis vertical state all the time; Meanwhile, the leading screw and nut mechanism in lower branch arm starts action, and push rod stretches out screw mandrel section finally reach designated length, and now ball hinged supporting base plate can first kiss the earth complete firm support.Seam between lower branch arm with upper branch arm coordinates, and is that collocation supporting component is along the separation structure between two of transport platform, and its stability of strutting system can significantly be strengthened in order to meet the firm needs of supporting component when holding state equally.
Accompanying drawing explanation
Fig. 1 is the assembly structure figure of traditional end dress formula supporting mechanism;
Fig. 2-3 is the mounting structure action diagram of supporting component;
Fig. 4 is the perspective view of supporting component;
Fig. 5 is the structural representation under supporting component is in collapsed state;
Fig. 6 is the I part partial enlarged drawing of Fig. 5;
Fig. 7 is the structural representation of supporting component when being in holding state;
Fig. 8 is the structural representation that lower branch arm place push rod is in when stretching out state.
In accompanying drawing each label and each component names corresponding relation of the present invention as follows:
A-supporting leg
10-transport platform 20-hydraulic actuating cylinder
30-upper branch arm 31-fixation wall 32-limited wall 32a-convex side
The hinged journal stirrup of 33-ennation 34-
40-lower branch arm 40a-recessed flank of tooth 41-boss 42-screw mandrel section
43-reducing motor 44-push rod 45-driving nut 46-ball hinged supporting base plate
The servo-actuated locking hook of 50-servo-actuated latch assembly 51-follow-up connecting rod 52-
53-frid 54-waist shaped hole
Detailed description of the invention
For ease of understanding, 2-8 does following description to specific embodiment of the invention structure and workflow by reference to the accompanying drawings herein:
The present invention completes the state after assembly manipulation see Fig. 1-2, is arranged on transport platform 10 upper table surface place all around respectively by adopting 4 groups of supporting components.Each supporting component is formed by upper branch arm 30, lower branch arm 40, hydraulic power mechanism (being also hydraulic actuating cylinder 20) and servo-actuated catch gear 50, arranges the electronic support leg be made up of leading screw and nut mechanism in lower branch arm 40.During work, outwards stretched by hydraulic power mechanism promotion upper branch arm 30 and lower branch arm 40, to realize four-point supporting transport platform.The supporting component split between two is when being in holding state, and its cross-tie span is greater than overall width 2.5 meters, can reach 4.5 meters, and cross-tie stability is obviously better than traditional end dress formula platform automatic supporting mechanism; Maintain the manoevreability indexs such as transport trolley original ground Clearance, departure angle simultaneously, also namely achieve the high motorized transport object of the equipments such as mobile radara.
When supporting component regained by needs transport platform 10, pull upper branch arm 30 by hydraulic power mechanism, upper branch arm 30 drives lower branch arm 40 and above automatic drawing back to transport platform 10 by hinged place.Before lower branch arm 40 responds action, namely the servo-actuated locking bail 52 at servo-actuated catch gear 50 place has started to depart from the snap lock for transport platform 10 following table, thus completes the automatic unlocking action of whole servo-actuated catch gear 50.
When needs support transport platform 10, promote upper branch arm 30 by hydraulic power mechanism, lower branch arm 40 keeps gravity vertical state and automatically stretches out push rod 44, to support transport platform 10.Meanwhile, servo-actuated catch gear 50 when lower branch arm 40 completes support part, servo-actuated locking hook 52 can with under turn over the following table fastening transport platform 10, complete the lock operation for above-mentioned action.
When ascribing concrete structure to, see Fig. 8, lower branch arm 40 includes electronic support leg, and electronic support leg then comprises the formation such as reducing motor 43, drive lead screw (being also screw mandrel section 42), driving nut 45, push rod 44, feather key, shell, ball hinged supporting base plate 46 and motor shield.Reducing motor 43 drives drive lead screw clickwise or anti-clickwise transmission, and drive lead screw drives driving nut 45 and push rod 44 linear reciprocating motion.Can on drive lead screw, be processed with guide groove and feather key is installed, for the sense of motion of positioning transmission nut 45 and push rod 44.Ball hinged supporting base plate 46 is arranged on below push rod 44, along with push rod 44 stretches out to contact with surface pressure.Ball hinged supporting base plate 46 rotatably adjustment until with the axes normal of lower branch arm 40.Motor shield is for the protection of reducing motor 43 from extraneous rain erosion, and push rod 44 is outer can arrange protective cover equally with from extraneous rain erosion.Electronic support leg is arranged on lower branch arm 40 inner chamber, for support transport platform 10.
See Fig. 4-7, by swing arm hinge between upper branch arm 30 and lower branch arm 40.Upper branch arm 30 is hinged by swing arm journal stirrup, swing arm bearing pin and transport platform 10, and upper branch arm 30 can carry out ± 90 ° of swings by the swing arm journal stirrup relatively on transport platform 10.When upper branch arm 30 outwards carry out 90 ° put outward time, lower branch arm 40 also outside movable support transport platform 10 thereupon; When upper branch arm 30 inwardly carries out putting in 90 °, lower branch arm 40 is also inwardly regained thereupon.Coordinate with the wedge surface seam of both hinged places between upper branch arm 30 with lower branch arm 40 and locate both holding states.
See Fig. 5-7, hydraulic power mechanism comprises hydraulic actuating cylinder 20, hydraulic actuating cylinder bearing pin and hydraulic actuating cylinder journal stirrup.The push rod end of hydraulic actuating cylinder 20 is hinged by hydraulic actuating cylinder bearing pin and upper branch arm 30, the casing wall of hydraulic actuating cylinder 20 then pass through hydraulic actuating cylinder bearing pin and hydraulic actuating cylinder journal stirrup hinged.Hydraulic actuating cylinder journal stirrup is fixedly mounted on transport platform 10.Hydraulic power mechanism is by external hydraulic pump driving.Upper branch arm 30 is by the elongation impetus of hydraulic actuating cylinder 20 or shrink pulling function and complete ± 90 ° of swings.
See Fig. 4, servo-actuated catch gear 50 includes servo-actuated locking bail 52, follow-up connecting rod 51, servo-actuated bearing pin and frid 53.Servo-actuated locking bail 42 by bearing pin and upper branch arm 30 hinged, frid 53 is fixedly mounted on upper branch arm 30.Follow-up connecting rod 51 is by hinged between the waist shaped hole 54 of servo-actuated bearing pin respectively and in servo-actuated locking bail 52 and frid 53, and meanwhile, the rod end of aforementioned hydraulic cylinder 20 is articulated with follow-up connecting rod 51 end in waist shaped hole 54 equally.When hydraulic power mechanism promote upper branch arm 30 outwards carry out 90 ° swing time, first, the piston rod of hydraulic power mechanism can promote follow-up connecting rod 51 and produce sliding action along waist shaped hole 54 hole length direction.Now, follow-up connecting rod 51 also can promote servo-actuated locking bail 52 simultaneously and rotate fastening transport platform 10.In like manner, when hydraulic power mechanism pull upper branch arm 30 inwardly carry out 90 ° swing time, first follow-up connecting rod 51 can pull servo-actuated locking bail 52 upwards to rotate unblock transport platform 10, thus whole supporting component can perform and turns over recovery operation.
Claims (9)
1. a upper dress formula large span platform automatic supporting mechanism, comprise transport platform (10), and for asking this transport platform (10) of support to make it away from the supporting component on ground, each supporting component transport platform (10) both sides place that is placed in facing each other; It is characterized in that: described supporting component is by hydraulic actuating cylinder (20), upper branch arm (30) and lower branch arm (40) the hinged planar hinge connective pole structure formed one by one; One jiao of end of upper branch arm (30) and the casing wall of hydraulic actuating cylinder (20) are all articulated with the upper table surface place of transport platform (10), the rod end of hydraulic actuating cylinder (20) is articulated with a side-walls of upper branch arm (30), hingedly each other between upper branch arm (30) top and lower branch arm (40) top construct with the catenary arm body forming lower branch arm (40), the jointed shaft of above-mentioned each hinge point is all parallel to each other; This automatic supporting mechanism is also included in supporting component when being in holding state, for the servo-actuated latch assembly (50) of lock support component operation position.
2. dress formula large span platform automatic supporting mechanism in one according to claim 1, is characterized in that: described servo-actuated latch assembly (50) comprises follow-up connecting rod (51) and the servo-actuated locking hook (52) that can turn over down the following table place being fastened on transport platform (10) hinged with it; Described servo-actuated locking hook (52) profile is in " L " word coupler body shape and the other end of its relative coupler body place end is articulated with on upper branch arm (30), is arranged in parallel between the jointed shaft axis of this hinge point axis and follow-up connecting rod (51) and servo-actuated locking hook (52); The side-walls for fixed piston rod of upper branch arm (30) arranges frid (53), frid (53) runs through plate body and arrange waist shaped hole (54), the hole length direction of waist shaped hole (54) intersects or parallel pistons bar telescopic direction; The other end of the relatively hinged servo-actuated locking hook (52) of follow-up connecting rod (51) is articulated with the rod end place of piston rod, and jointly with form chute between the waist shaped hole (54) on frid (53) and lead and coordinate.
3. dress formula large span platform automatic supporting mechanism in one according to claim 2, it is characterized in that: described upper branch arm (30) profile is the deckle board structure of parallel four limit shapes, the side hypotenuse of upper branch arm (30) forms the fixation wall (31) of fixing frid (53), and relative opposite side hypotenuse leans the top end face of lower branch arm (40) to form the limited wall (32) of firm spacing cooperation when supporting component is in holding state; The lower side angle end of limited wall (32) forms the pin jointed end of hinged upper branch arm (30); The lower side angle end of fixation wall (31) forms the pin jointed end of hinged transport platform (10); Leave in upper branch arm (30) for installing servo-actuated latch assembly (50) and providing the container cavity of its activity space.
4. dress formula large span platform automatic supporting mechanism in one according to claim 2, it is characterized in that: the pass of waist shaped hole (54) along fixation wall (31) wall after downward-extension, more gradually the outside wall away from fixation wall (31) to form the poroid structure of camber line.
5. dress formula large span platform automatic supporting mechanism in the one according to claim 3 or 4, is characterized in that: the bottom face of described upper branch arm (30) is extended with the ennation (33) of triangular shape to the upper table surface place of transport platform (10); The bottom face place of upper branch arm (30) is fixed in one side laminating of ennation (33), and the relative one jiao of end in this side arranges hinged journal stirrup (34) to form the pin jointed end for hinged transport platform (10) of upper branch arm (30); The bottom face of this ennation (33) form the maximum process amplitude of spacing hydraulic actuating cylinder (20) confined planes.
6. dress formula large span platform automatic supporting mechanism in the one according to claim 3 or 4, is characterized in that: the top end face of described lower branch arm (40) in form wedge surface between the limited wall (32) of upper branch arm (30) and construct against the inclined plane shape coordinated; The top end face of lower branch arm (40) is arranged the recessed flank of tooth (40a), the convex side (32a) that the corresponding layout in limited wall (32) place of upper branch arm (30) coordinates with it, both form seam and coordinate between fitting surface.
7. dress formula large span platform automatic supporting mechanism in the one according to claim 3 or 4, it is characterized in that: lower branch arm (40) is provided with the boss (41) playing spacing hydraulic actuating cylinder backhaul amplitude when supporting component is packed up, this boss (41) be positioned on lower branch arm (40) with the lower sidewalls place of upper branch arm (30) hinged place, the bearing of trend of boss (41) points to the bottom face place of upper branch arm (30).
8. dress formula large span platform automatic supporting mechanism in the one according to claim 1 or 2 or 3 or 4, it is characterized in that: described lower branch arm arranges leading screw and nut mechanism in (40), screw mandrel section (42) the axis plumbing arrangement of described leading screw and nut mechanism, and its rotation is ordered about with reducing motor (43) in its top; The push rod (44) of screw mandrel section (42) sheathed sleeve-shaped outward, push rod (44) arranges driving nut (45) with the cooperation place of screw mandrel section (42), driving nut (45) be fixed on push rod (44) top end and and form screw thread fit between screw mandrel section (42); The bottom face place of push rod (44) arranges ball hinged supporting base plate (46).
9. dress formula large span platform automatic supporting mechanism in the one according to claim 1 or 2 or 3 or 4, is characterized in that: transport platform (10) profile is rectangular planar structure; Supporting component is four groups, and the two ends place being arranged in the length direction of transport platform (10) split between two.
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| CN113697007A (en) * | 2021-09-17 | 2021-11-26 | 中国人民解放军63653部队 | Low flat trailer and car |
| CN113731612A (en) * | 2021-09-17 | 2021-12-03 | 中国人民解放军63653部队 | Movable crushing, screening and sorting system |
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| CN112079303A (en) * | 2020-08-25 | 2020-12-15 | 曾利华 | Construction engineering is with scissors fork lift maintenance platform of being convenient for instrument transmission |
| CN112079303B (en) * | 2020-08-25 | 2021-11-19 | 曾利华 | Construction engineering is with scissors fork lift maintenance platform of being convenient for instrument transmission |
| CN113697007A (en) * | 2021-09-17 | 2021-11-26 | 中国人民解放军63653部队 | Low flat trailer and car |
| CN113731612A (en) * | 2021-09-17 | 2021-12-03 | 中国人民解放军63653部队 | Movable crushing, screening and sorting system |
| CN113731612B (en) * | 2021-09-17 | 2023-08-08 | 中国人民解放军63653部队 | Movable crushing screening and sorting system |
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|---|---|
| CN105235659B (en) | 2017-10-17 |
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